Signed-off-by: schroedtert <t.schroedter@fz-juelich.de>

feat: Adds a custom MessageBox which does not break PeTrack when running with -platform offscreen (mostly CI)

Resolve "Custom MessageBox with logging capabilities and offscreen/scripting support"

Fixed occurence of warning "Looping and tracking can't be used together"
when looping isn't activated

fix: Video now always ends with last frame, even when fixing framerate

- Changed UI accordingly
- Fixing framerate and enforcing it via frame dropping

- changed LICENSE to match GPLv3
- add license header to project source files
- add note to license to ReadMe.md

Signed-off-by: t.schroedter <t.schroedter@fz-juelich.de>

Playback now is controlled via a loop, not semi-recursive function calls.

Signed-off-by: Schrödter, Tobias <t.schroedter@fz-juelich.de>

queue instead of a signal from QSingleShot

This performs better when used on a system under high load, like a weak
laptop or a PC doing other stuff like compiling as well.

d.kilic authored 4 years ago and Schrödter, Tobias committed 4 years ago

- Migrate build system from qmake to cmake
- Add catch2 and trompeloeil
- Update to CI to execute unit tests
- minor fixes of depreacation and warnings
- Color can be selected by clicking on the specific hat